Congratulations on a good purchase. I find that lenses for my Mamiya 645 Pro TL are so cheap that I often can't resist and thus have ended up with quite a few. To date I have acquired the 35/3.5N, two versions of the 45/2.8, 55/2.8, 80/1.9, 80/2.8, 80/4M, 110/2.8, 150/4, 210/4, 300/5.6 and the 2X TC, and paid less than $100 for every one of them... (some were in fairly rough condition but they all work fine). But then, come to think of it, I got the whole camera (AE Finder, 120 back, mirror box and power winder) for about $100 so this system is clearly one of my best buys!